Question

Which points are considered for the modern periodic table?

2. How are blocks indicated?

3. Which elements are present on the zig-zag line?

4. Draw the electronic configuration of the second row element of first group in the periodic

table.

5. In the periodic table while going from left to right atomic radius decreases. Explain.​

Answer 1

Answer:

Elements are arranged from left to right and top to bottom

• Blocks indicate which sublevel is being filled.

• These are Antimony (Sb), Germanium (Ge), Boron (B), Silicon (Si), Arsenic (As), Tellurium (Te), Polonium (Po).

• do by yourself

• iAtomic size gradually decreases from left to right across a period of elements. ... This means that the nucleus attracts the electrons more strongly, pulling the atom's shell closer to the nucleus. The valence electrons are held closer towards the nucleus of the atom. As a result, the atomic radius decreases.15-An order of increasing atomic number.